[wesley6610]

Does anyone know exactly how much Fe supplment macro algae needs to thrive? I have Chateo in my refugium and a 12 hour reverse lighting schedule, but while my corals thrive, my macro algae looks like its on the brink of dying. Its not lush like it should be, more like a slight whitish tint to it and somewhat brittle. My water parameters are fine however. My mangroves are growing and my skimmer pulls out a cup of skimmate in 4 days or so.

pH 8.31
Temp 80
Ca 420
Alk 9 dKH
Mg 1350
Nutrients are zero